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Asus ZenBook Flip UX360UAK-BB351T Convertible Review

Sascha Mölck, Stefanie Voigt (translated by Liala Stieglitz), 02/23/2017

Stylish, slim, enduring. With the ZenBook Flip UX360UAK, Asus delivers a stylish and slim 13.3-inch convertible that can boast with an outstanding battery life. The configuration is also good: SSD, IPS panel, backlit keyboard. The whistling fan is an annoyance. This flaw should not appear in a 1000-Euro ($1061) device.

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For the original German review, see here.

Asus' ZenBook Flip UX360UAK is the sister model of the identically built ZenBook flip UX360UA that we tested a while ago. The new model is basically a Kaby Lake upgrade. However, improvements have also been made in other areas. Rivals of the ZenBook are devices such as Acer's Spin 5 SP513-51Lenovo's Yoga 910-13IKBDell's XPS 13-9365, and HP's Spectre x360 13.

Since the UX360UA and the UX360UAK are identical, we will not go into details about the casing, configuration, keyboard, and speakers. The corresponding information can be found in the review of the ZenBook Flip UX360UA.

Asus Zenbook Flip UX360UAK-BB351T (Zenbook Flip UX360 Series)
Graphics adapter
Intel HD Graphics 620, Core: 300-1000 MHz, dual-channel, 21.20.16.4550
Memory
8192 MB 
, DDR3-1866, dual-channel, soldered memory, no memory banks
Display
13.3 inch 16:9, 1920 x 1080 pixel 166 PPI, capacitive, 10 touch points, AU Optronics B133HAN02.7, IPS, glossy: yes
Mainboard
Intel Kaby Lake-U Premium PCH
Storage
Micron SSD 1100 (MTFDDAV256TBN), 256 GB 
, 210 GB free
Soundcard
Realtek ALC255 @ Intel Sunrise Point PCH - High Definition Audio Controller
Connections
3 USB 3.0 / 3.1 Gen1, 1 HDMI, Audio Connections: combo audio, Card Reader: SD, Brightness Sensor, Sensors: accelerometer, TPM 2.0
Networking
Intel Dual Band Wireless-AC 8260 (a/b/g/n/ac), Bluetooth 4.2
Size
height x width x depth (in mm): 14 x 321 x 219 ( = 0.55 x 12.64 x 8.62 in)
Battery
57 Wh Lithium-Ion, Battery runtime (according to manufacturer): 12 h
Operating System
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: HD
Additional features
Speakers: stereo, Keyboard: chiclet, Keyboard Light: yes, McAfee LiveSafe (trial), MS Office 365 (trial), 24 Months Warranty
Weight
1.3 kg ( = 45.86 oz / 2.87 pounds), Power Supply: 175 g ( = 6.17 oz / 0.39 pounds)
Price
999 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Have the hinges been reworked?

The biggest weakness of the Skylake model that we tested a few months ago was its hinges. They were too weak to keep the lid in every position. The lid closed at an opening angle of 45 degrees. This also happened at an opening angle of 135 degrees: The lid dropped to the surface. This is no longer the case with our current review sample. The hinges have been pulled noticeably tighter and thus allow for all intended modes of use.

Maintenance

The ZenBook does not have a maintenance hatch. The base tray has to be removed for accessing the innards. This requires releasing all (Torx) screws on the device's underside. Positive: no additional screws are hidden behind the rubber stoppers. The base tray can then be removed. However, the Wi-Fi antennas are on the inside of the base tray and connect the tray and motherboard with wires.

Innards
Innards
The Wi-Fi antennas are glued to the inside of the base tray
The Wi-Fi antennas are glued to the inside of the base tray

Size Comparison

SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Dell XPS 13-9365 2-in-1
 
61.6 MB/s ∼100% +87%
Asus Zenbook Flip UX360UAK-BB351T
 
33 MB/s ∼54%
Asus Zenbook UX360UA-C4159T
 
31 MB/s ∼50% -6%
Asus Zenbook UX360CA-FC060T
 
27.9 MB/s ∼45% -15%
maximum AS SSD Seq Read Test (1GB)
Dell XPS 13-9365 2-in-1
 
87.2 MB/s ∼100% +125%
Asus Zenbook Flip UX360UAK-BB351T
 
38.8 MB/s ∼44%
Asus Zenbook UX360CA-FC060T
 
37.17 MB/s ∼43% -4%
Asus Zenbook UX360UA-C4159T
 
37 MB/s ∼42% -5%
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Asus Zenbook Flip UX360UAK-BB351T
Intel Dual Band Wireless-AC 8260
495 MBit/s ∼100%
Acer Spin 5 SP513-51
Qualcomm Atheros QCA9377 Wireless Network Adapter
347 MBit/s ∼70% -30%
Dell XPS 13-9365 2-in-1
802.11 a/b/g/n/ac
309 MBit/s ∼62% -38%
iperf3 Client (transmit) TCP 1 m 4M x10
Asus Zenbook Flip UX360UAK-BB351T
Intel Dual Band Wireless-AC 8260
665 MBit/s ∼100%
Dell XPS 13-9365 2-in-1
802.11 a/b/g/n/ac
471 MBit/s ∼71% -29%
Acer Spin 5 SP513-51
Qualcomm Atheros QCA9377 Wireless Network Adapter
349 MBit/s ∼52% -48%
iperf Server (receive) TCP 1 m
Lenovo Yoga 910-13IKB-80VF004CGE
Atheros/Qualcomm QCA6174
651 MBit/s ∼100%
Asus Zenbook UX360UA-C4159T
Intel Dual Band Wireless-AC 7265
505 MBit/s ∼78%
iperf Client (transmit) TCP 1 m
Lenovo Yoga 910-13IKB-80VF004CGE
Atheros/Qualcomm QCA6174
682 MBit/s ∼100%
Asus Zenbook UX360UA-C4159T
Intel Dual Band Wireless-AC 7265
526 MBit/s ∼77%

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Display

Pixel grid
Pixel grid

The ZenBook is equipped with a 13.3-inch touchscreen that has a native resolution of 1920x1080 pixels. Its brightness (349.7 cd/m²) and contrast (1269:1) are compelling. Unfortunately, the screen exhibits PWM flickering at a frequency of 50 Hz in brightness levels of 50% and lower. This can lead to headaches and/or eye problems even in users who are not sensitive to the light.

Our review sample is equipped with an anti-glare screen protector. It actually provides a very visible improvement compared to glossy screens.

340
cd/m²
358
cd/m²
356
cd/m²
331
cd/m²
368
cd/m²
361
cd/m²
321
cd/m²
358
cd/m²
354
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 368 cd/m² Average: 349.7 cd/m² Minimum: 22.3 cd/m²
Brightness Distribution: 87 %
Center on Battery: 374 cd/m²
Contrast: 1269:1 (Black: 0.29 cd/m²)
ΔE Color 5.26 | 0.4-29.43 Ø6.2
ΔE Greyscale 5.87 | 0.64-98 Ø6.4
92% sRGB (Argyll 3D) 60% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.42
Asus Zenbook Flip UX360UAK-BB351T
IPS, 1920x1080, 13.3
Asus Zenbook UX360UA-C4159T
IPS, 1920x1080, 13.3
Asus Zenbook UX360CA-FC060T
IPS with 72% NTSC, 1920x1080, 13.3
Acer Spin 5 SP513-51
IPS LED, 1920x1080, 13.3
Lenovo Yoga 910-13IKB-80VF004CGE
IPS, 3840x2160, 13.9
Dell XPS 13-9365 2-in-1
IPS, 1920x1080, 13.3
HP Spectre x360 13-w023dx
IPS, 1920x1080, 13.3
Response Times
16%
107%
-28%
-9%
643%
2%
Response Time Grey 50% / Grey 80% *
36 (15, 21)
29 (11, 18)
19%
29 (15, 14)
19%
56 (18, 38)
-56%
46 (14, 32)
-28%
48 (16.4, 31.6)
-33%
33.2 (16, 17.2)
8%
Response Time Black / White *
27 (6, 21)
19 (7, 12)
30%
22 (5, 17)
19%
27 (8, 19)
-0%
24 (6, 18)
11%
32.8 (7.6, 25.2)
-21%
28 (5.6, 22.4)
-4%
PWM Frequency
50 (50)
50 (40)
0%
192 (30)
284%
1042 (29)
1984%
Screen
-4%
-8%
-7%
-15%
-11%
-14%
Brightness middle
368
344
-7%
302
-18%
245
-33%
348
-5%
322.6
-12%
334.6
-9%
Brightness
350
326
-7%
298
-15%
233
-33%
310
-11%
306
-13%
319
-9%
Brightness Distribution
87
86
-1%
90
3%
87
0%
80
-8%
91
5%
90
3%
Black Level *
0.29
0.27
7%
0.21
28%
0.21
28%
0.25
14%
0.19
34%
0.336
-16%
Contrast
1269
1274
0%
1438
13%
1167
-8%
1392
10%
1698
34%
996
-22%
Colorchecker DeltaE2000 *
5.26
5.53
-5%
6.33
-20%
4.2
20%
7.86
-49%
7.7
-46%
6.21
-18%
Colorchecker DeltaE2000 max. *
8.78
10.01
-14%
11.89
-35%
8.75
-0%
13.43
-53%
11.1
-26%
12
-37%
Greyscale DeltaE2000 *
5.87
6.67
-14%
8.13
-39%
3.94
33%
8.25
-41%
7.9
-35%
7.71
-31%
Gamma
2.42 91%
2.43 91%
2.52 87%
2.66 83%
2.05 107%
2.88 76%
2.36 93%
CCT
6998 93%
7012 93%
6811 95%
6096 107%
6834 95%
7044 92%
6458 101%
Color Space (Percent of AdobeRGB 1998)
60
60
0%
60
0%
38
-37%
58
-3%
44.1
-26%
58.6
-2%
Color Space (Percent of sRGB)
92
93
1%
93
1%
59
-36%
90
-2%
69.9
-24%
90
-2%
Total Average (Program / Settings)
6% / 1%
50% / 18%
-18% / -10%
-12% / -14%
316% / 140%
-6% / -12%

* ... smaller is better

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM detected 50 Hz ≤ 50 % brightness setting

The display backlight flickers at 50 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 50 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 50 Hz is very low, so the flickering may cause eyestrain and headaches after extended use.

In comparison: 52 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 9254 (minimum: 43 - maximum: 142900) Hz was measured.

Asus has preloaded a color profile ex-factory. Consequently, the color reproduction is better than the other comparable devices in the state of delivery. The DeltaE 2000 color deviation is 5.26. A rate less than 3 would be desirable. The screen does not exhibit a bluish tint.

CalMAN - ColorChecker
CalMAN - ColorChecker
CalMAN - Grayscale
CalMAN - Grayscale
CalMAN - Saturation Sweeps
CalMAN - Saturation Sweeps

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
27 ms ... rise ↗ and fall ↘ combined↗ 6 ms rise
↘ 21 ms fall
The screen shows relatively slow response rates in our tests and may be too slow for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 53 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (25.6 ms).
       Response Time 50% Grey to 80% Grey
36 ms ... rise ↗ and fall ↘ combined↗ 15 ms rise
↘ 21 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.9 (minimum) to 636 (maximum) ms. » 27 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (41 ms).

Asus has equipped the ZenBook with a viewing angle stable IPS panel. Thus, the screen is legible from every position. The screen's brightness and contrast would allow for outdoor use. However, the screen's glossy surface proves to be a problem in many cases, particularly in bright sunlight despite the anti-glare protector. The ZenBook has to be placed so that reflections are prevented.

The ZenBook outdoors (under completely overcast skies)
The ZenBook outdoors (under completely overcast skies)

Performance

With the ZenBook Flip UX360UAK, Asus has a 13.3-inch convertible in its lineup. The installed Kaby Lake processor has enough computing power even for applications beyond the office and Internet. Our review sample is sold for just under 1000 Euros (~$1061). Other configurations and colors are available.

Processor

Intel's Core i5-7200U (Kaby Lake) dual-core processor is inside the ZenBook. It is a power-efficient ULV model with a TDP of 15 watts. The processor clocks at a base speed of 2.5 GHz, which can be boosted up to 3.1 GHz (both cores) via Turbo. Turbo is utilized in both AC and battery mode.

Cinebench R10 Rendering Single 32Bit
4942
Cinebench R10 Rendering Multiple CPUs 32Bit
11323
Cinebench R10 Shading 32Bit
7531
Cinebench R15 CPU Single 64Bit
125 Points
Cinebench R15 CPU Multi 64Bit
326 Points
Cinebench R15 OpenGL 64Bit
46.68 fps
Cinebench R15 Ref. Match 64Bit
97.7 %
Help
Cinebench R15
CPU Single 64Bit
Lenovo Yoga 910-13IKB-80VF004CGE
Intel Core i7-7500U
147 Points ∼67% +18%
Dell XPS 13-9365 2-in-1
Intel Core i7-7Y75
130 Points ∼60% +4%
HP Spectre x360 13-w023dx
Intel Core i7-7500U
126 Points ∼58% +1%
Asus Zenbook Flip UX360UAK-BB351T
Intel Core i5-7200U
125 Points ∼57%
Asus Zenbook UX360UA-C4159T
Intel Core i7-6500U
123 Points ∼56% -2%
Acer Spin 5 SP513-51
Intel Core i3-6100U
96 Points ∼44% -23%
Asus Zenbook UX360CA-FC060T
Intel Core m3-6Y30
85 Points ∼39% -32%
CPU Multi 64Bit
Lenovo Yoga 910-13IKB-80VF004CGE
Intel Core i7-7500U
354 Points ∼8% +9%
Asus Zenbook Flip UX360UAK-BB351T
Intel Core i5-7200U
326 Points ∼7%
Asus Zenbook UX360UA-C4159T
Intel Core i7-6500U
317 Points ∼7% -3%
HP Spectre x360 13-w023dx
Intel Core i7-7500U
314 Points ∼7% -4%
Dell XPS 13-9365 2-in-1
Intel Core i7-7Y75
258 Points ∼6% -21%
Acer Spin 5 SP513-51
Intel Core i3-6100U
240 Points ∼5% -26%
Asus Zenbook UX360CA-FC060T
Intel Core m3-6Y30
208 Points ∼5% -36%
Cinebench R10
Rendering Single 32Bit
HP Spectre x360 13-w023dx
Intel Core i7-7500U
5659 Points ∼52% +15%
Dell XPS 13-9365 2-in-1
Intel Core i7-7Y75
5496 Points ∼51% +11%
Asus Zenbook Flip UX360UAK-BB351T
Intel Core i5-7200U
4942 Points ∼46%
Rendering Multiple CPUs 32Bit
Asus Zenbook Flip UX360UAK-BB351T
Intel Core i5-7200U
11323 Points ∼23%
HP Spectre x360 13-w023dx
Intel Core i7-7500U
11244 Points ∼23% -1%
Dell XPS 13-9365 2-in-1
Intel Core i7-7Y75
9392 Points ∼19% -17%
Geekbench 3
32 Bit Multi-Core Score
Asus Zenbook Flip UX360UAK-BB351T
Intel Core i5-7200U
6914 Points ∼22%
32 Bit Single-Core Score
Asus Zenbook Flip UX360UAK-BB351T
Intel Core i5-7200U
3209 Points ∼67%
Geekbench 4.0
64 Bit Multi-Core Score
Asus Zenbook Flip UX360UAK-BB351T
Intel Core i5-7200U
7327 Points ∼27%
64 Bit Single-Core Score
Asus Zenbook Flip UX360UAK-BB351T
Intel Core i5-7200U
3816 Points ∼66%
JetStream 1.1 - Total Score
Lenovo Yoga 910-13IKB-80VF004CGE
Intel Core i7-7500U
241.79 Points ∼72% +12%
Asus Zenbook Flip UX360UAK-BB351T
Intel Core i5-7200U
215.07 Points ∼64%
Asus Zenbook UX360UA-C4159T
Intel Core i7-6500U
210.51 Points ∼63% -2%
Dell XPS 13-9365 2-in-1
Intel Core i7-7Y75
193.76 Points ∼58% -10%
Asus Zenbook UX360CA-FC060T
Intel Core m3-6Y30
111.11 Points ∼33% -48%
Acer Spin 5 SP513-51
Intel Core i3-6100U
90.86 Points ∼27% -58%

System Performance

The system performance does not give any reason for complaint. The strong processor and fast SSD ensure a smoothly running system. The very good PCMark 8 score confirms the subjective impression. A working memory that operates in dual-channel mode rounds this off. The ZenBook looks impressive in most application fields. Increasing the performance is not possible as Asus has exhausted all options.

PCMark 8 Home Score Accelerated v2
3665 points
Help
PCMark 8 - Home Score Accelerated v2
HP Spectre x360 13-w023dx
HD Graphics 620, 7500U, Samsung PM951 NVMe MZVLV512
3795 Points ∼62% +4%
Asus Zenbook Flip UX360UAK-BB351T
HD Graphics 620, 7200U, Micron SSD 1100 (MTFDDAV256TBN)
3665 Points ∼60%
Lenovo Yoga 910-13IKB-80VF004CGE
HD Graphics 620, 7500U, Samsung PM951 NVMe MZVLV512
3555 Points ∼58% -3%
Asus Zenbook UX360UA-C4159T
HD Graphics 520, 6500U, SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
3435 Points ∼56% -6%
Acer Spin 5 SP513-51
HD Graphics 520, 6100U, Hynix HFS128G39TND
3224 Points ∼53% -12%
Dell XPS 13-9365 2-in-1
HD Graphics 615, 7Y75, Toshiba NVMe THNSN5256GPUK
3134 Points ∼51% -14%
Asus Zenbook UX360CA-FC060T
HD Graphics 515, 6Y30, Lite-On CV1-8B128
2727 Points ∼45% -26%

Storage Device

A solid-state drive by Micron is installed as the system drive. It is an M.2 model with a total capacity of 256 GB. 210 GB can be used. The rest of the storage capacity is divided into the Windows installation and a recovery partition. The SSD's transfer rates are good.

Micron SSD 1100 (MTFDDAV256TBN)
Sequential Read: 478.4 MB/s
Sequential Write: 419.9 MB/s
512K Read: 351.7 MB/s
512K Write: 294.2 MB/s
4K Read: 24 MB/s
4K Write: 87 MB/s
4K QD32 Read: 199.3 MB/s
4K QD32 Write: 232.4 MB/s
Asus Zenbook Flip UX360UAK-BB351T
Micron SSD 1100 (MTFDDAV256TBN)
Asus Zenbook UX360UA-C4159T
SK Hynix Canvas SC300 512GB M.2 (HFS512G39MND)
Asus Zenbook UX360CA-FC060T
Lite-On CV1-8B128
Lenovo Yoga 910-13IKB-80VF004CGE
Samsung PM951 NVMe MZVLV512
Dell XPS 13-9365 2-in-1
Toshiba NVMe THNSN5256GPUK
HP Spectre x360 13-w023dx
Samsung PM951 NVMe MZVLV512
CrystalDiskMark 3.0
13%
-17%
111%
76%
97%
Write 4k QD32
232.4
285.3
23%
131.8
-43%
488.7
110%
250.2
8%
361.2
55%
Read 4k QD32
199.3
389.6
95%
207.7
4%
570.3
186%
411
106%
535.2
169%
Write 4k
87
72.08
-17%
62.03
-29%
159.7
84%
121.2
39%
137.9
59%
Read 4k
24
28.52
19%
31.89
33%
43.5
81%
32.93
37%
42.66
78%
Write 512
294.2
310.7
6%
144.1
-51%
579.6
97%
410.7
40%
570.5
94%
Read 512
351.7
288.6
-18%
353
0%
701.1
99%
966.3
175%
679
93%
Write Seq
419.9
421.3
0%
182.9
-56%
578.4
38%
629.4
50%
570.7
36%
Read Seq
478.4
452.1
-5%
497
4%
1412
195%
1206
152%
1376
188%

Graphics Card

Intel's HD Graphics 620 GPU is responsible for video output. It supports DirectX 12 and clocks at up to 1000 MHz. The 3DMark 2011 benchmark scores are at a normal level for this GPU. The device benefits from the working memory that operates in dual-channel mode here.

3DMark 11 Performance
1741 points
Help
3DMark 11 - 1280x720 Performance GPU
Lenovo Yoga 910-13IKB-80VF004CGE
Intel HD Graphics 620, Intel Core i7-7500U
1623 Points ∼3% +3%
Asus Zenbook Flip UX360UAK-BB351T
Intel HD Graphics 620, Intel Core i5-7200U
1569 Points ∼3%
HP Spectre x360 13-w023dx
Intel HD Graphics 620, Intel Core i7-7500U
1560 Points ∼3% -1%
Asus Zenbook UX360UA-C4159T
Intel HD Graphics 520, Intel Core i7-6500U
1489 Points ∼3% -5%
Dell XPS 13-9365 2-in-1
Intel HD Graphics 615, Intel Core i7-7Y75
1370 Points ∼3% -13%
Acer Spin 5 SP513-51
Intel HD Graphics 520, Intel Core i3-6100U
1213 Points ∼2% -23%
Asus Zenbook UX360CA-FC060T
Intel HD Graphics 515, Intel Core m3-6Y30
714 Points ∼1% -54%

Gaming Performance

Quite a number of games can be played on the ZenBook. However, we primarily mean games with low hardware requirements. Low resolutions and low quality settings are usually also needed for these games. Performance-driven hits, such as "Mafia 3" are never playable.

low med. high ultra
BioShock Infinite (2013) 54.732.626.68.4fps
Resident Evil 7 (2017) 29.913.1fps
For Honor (2017) 23.48.9fps

Emissions and Energy Management

System Noise

The ZenBook's fan is often inactive while idling and silence prevails. However, the fan speeds up for a moment, even under light load (opening a website). Unfortunately, it then produces a quiet whistling sound. The fan speeds up a bit more during load. We measured a noise level of 36 dB(A) in the stress test. An occasional electronic noise can be heard when an ear is placed on the device.

For the fan noise to be cancelled in routine use, the fan management has to be adjusted manually. We use the tool NoteBook FanControl. It allows adapting the fan speeds of supported laptops. The latest version (1.5) supports the ZenBook. However, the user should be aware that it is used at their own risk. Damages due to overheating are on one's own account.

NoteBook FanControl
NoteBook FanControl

Noise Level

Idle
30.7 / 30.7 / 31.7 dB(A)
Load
38.5 / 36 dB(A)
  red to green bar
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm distance)   environment noise: 30.7 dB(A)
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2037.136.534.536.135.837.12535.13736.232.533.335.13131.731.831.631.532.631.74030.930.632.233.231.330.95031.132.130.330.529.931.16329.930.527.530.431.129.98028.72927.829.328.228.710027.328.527.628.728.327.312526.426.127.425.525.326.416025.725.626.424.825.625.72002524.923.924.924.92525023.523.223.723.523.523.531523.423.622.722.922.923.440024.122.922.421.621.824.150021.921.9212120.921.963021.321.32020.619.921.38002221.318.919.819.322100025.122.318.819.418.925.1125023.421.818.518.918.223.4160027.124.917.81918.227.1200028.526.317.819.517.828.5250029.127.217.722.317.629.1315028.625.917.618.517.628.640002925.817.817.917.629500028.322.617.81817.628.3630022.719.91818.117.822.7800020.418.718.118.117.820.41000019.318.317.817.917.719.31250018.717.917.917.817.518.71600018.117.7181817.718.1SPL38.536.130.831.730.838.5N2.82.31.51.61.52.8median 24.1median 22.9median 18.5median 19.5median 18.2median 24.1Delta2.72.62.22.52.32.7hearing rangehide median Fan NoiseAsus Zenbook Flip UX360UAK-BB351T

Temperature

The ZenBook in the stress test
The ZenBook in the stress test

The ZenBook performed our stress test (Prime95 and FurMark run for at least one hour) the same way in both AC and battery mode. The processor started the test at a stable 2.5 GHz, and the graphics unit clocked at 450 to 750 MHz. The CPU's clock was reduced to 1.5 to 1.6 GHz after about 5 minutes while the GPU accelerated up to 950 to 1000 MHz. The rates did not change in the course of the test. The laptop did not heat up excessively. 40 degrees Celsius (~104 degrees Fahrenheit) was marginally exceeded on only two measuring points during the stress test.

Max. Load
 36.5 °C
98 F
41.2 °C
106 F
32.5 °C
91 F
 
 33.3 °C
92 F
38 °C
100 F
28.5 °C
83 F
 
 28.4 °C
83 F
27.2 °C
81 F
26.7 °C
80 F
 
Maximum: 41.2 °C = 106 F
Average: 32.5 °C = 91 F
32.5 °C
91 F
41 °C
106 F
39 °C
102 F
30.2 °C
86 F
34.3 °C
94 F
33 °C
91 F
27.9 °C
82 F
29.3 °C
85 F
30 °C
86 F
Maximum: 41 °C = 106 F
Average: 33 °C = 91 F
Power Supply (max.)  42.3 °C = 108 F | Room Temperature 21.8 °C = 71 F | FIRT 550-Pocket
(±) The average temperature for the upper side under maximal load is 32.5 °C / 91 F, compared to the average of 30.4 °C / 87 F for the devices in the class Convertible.
(±) The maximum temperature on the upper side is 41.2 °C / 106 F, compared to the average of 35.4 °C / 96 F, ranging from 21.8 to 55.7 °C for the class Convertible.
(±) The bottom heats up to a maximum of 41 °C / 106 F, compared to the average of 36.5 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 23.3 °C / 74 F, compared to the device average of 30.4 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 28.4 °C / 83.1 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 29.1 °C / 84.4 F (+0.7 °C / 1.3 F).
Temperature development upper side (load)
Temperature development upper side (load)
Temperature development underside (load)
Temperature development underside (load)
Temperature development upper side (idle)
Temperature development upper side (idle)
Temperature development underside (idle)
Temperature development underside (idle)
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2035.835.835.82537.233.337.23136.132.636.14037.631.337.65036.929.936.96338.331.138.38039.728.239.710042.428.342.412542.825.342.816044.425.644.42004824.94825051.723.551.731557.422.957.440057.821.857.850057.920.957.963059.219.959.280061.119.361.1100059.718.959.7125062.318.262.3160062.918.262.9200062.517.862.5250061.617.661.6315060.417.660.4400060.917.660.950006017.660630058.317.858.3800054.817.854.81000054.717.754.71250057.517.557.51600056.417.756.4SPL72.530.872.5N31.11.531.1median 57.9median 18.2median 57.9Delta4.32.34.335.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6median 17.84.62.4hearing rangehide median Pink NoiseAsus Zenbook Flip UX360UAK-BB351TApple MacBook 12 (Early 2016) 1.1 GHz
Asus Zenbook Flip UX360UAK-BB351T audio analysis

(-) | not very loud speakers (63 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 10.1% lower than median
(±) | linearity of bass is average (7.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.6% away from median
(+) | mids are linear (2.8% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.6% away from median
(+) | highs are linear (3.1% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (11.1% difference to median)
Compared to same class
» 2% of all tested devices in this class were better, 3% similar, 95% worse
» The best had a delta of 11%, average was 22%, worst was 53%
Compared to all devices tested
» 4% of all tested devices were better, 2% similar, 94% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Apple MacBook 12 (Early 2016) 1.1 GHz audio analysis

(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 11.3% lower than median
(±) | linearity of bass is average (14.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.4% away from median
(+) | mids are linear (5.5% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2% away from median
(+) | highs are linear (4.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (9.3% difference to median)
Compared to same class
» 2% of all tested devices in this class were better, 2% similar, 97% worse
» The best had a delta of 8%, average was 20%, worst was 50%
Compared to all devices tested
» 2% of all tested devices were better, 1% similar, 98% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Frequency diagram in comparison (checkboxes above can be turned on/off!)

Power Consumption

The laptop does not exhibit any irregularities in terms of power consumption. We measured a maximum idle power consumption of 8.6 watts. The rate climbed to 38.3 watts during the stress test. However, the consumption quickly dropped again to 30.2 watts since the CPU throttled. The power supply has a nominal output of 45 watts.

Power Consumption
Off / Standbydarklight 0.32 / 0.36 Watt
Idledarkmidlight 4.2 / 7.4 / 8.6 Watt
Load midlight 32 / 30.2 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy

Battery Runtime

Our practical Wi-Fi test simulates the load needed for opening websites via a script. The "Balanced" profile is enabled, the laptop's energy-saving features are disabled, and the screen's brightness is set to approximately 150 cd/m². The ZenBook achieved a runtime of 11:42 hours, and outstripped its Skylake predecessor by a good 2 hours.

Battery Runtime
NBC WiFi Websurfing Battery Test 1.3 (Edge 38)
11h 42min
Battery Runtime - WiFi Websurfing 1.3
Asus Zenbook Flip UX360UAK-BB351T
7200U, HD Graphics 620, 57 Wh
702 min ∼27%
Dell XPS 13-9365 2-in-1
7Y75, HD Graphics 615, 46 Wh
686 min ∼26% -2%
Lenovo Yoga 910-13IKB-80VF004CGE
7500U, HD Graphics 620, 78 Wh
644 min ∼24% -8%
Asus Zenbook UX360UA-C4159T
6500U, HD Graphics 520, 57 Wh
581 min ∼22% -17%
HP Spectre x360 13-w023dx
7500U, HD Graphics 620, 57.8 Wh
558 min ∼21% -21%
Acer Spin 5 SP513-51
6100U, HD Graphics 520, 45 Wh
463 min ∼18% -34%
Asus Zenbook UX360CA-FC060T
6Y30, HD Graphics 515, 54 Wh
386 min ∼15% -45%

Pros

+ bright, high-contrast IPS panel
+ Full HD resolution
+ fast SSD
+ very good battery life
+ stylish, slim casing
+ ac WiFi
+ Type-C USB (USB 3.1 Gen 1)

Cons

- fan whistles lightly
- slow memory card reader

Verdict

In review: Asus ZenBook Flip UX360UAK BB351T. Test model courtesy of Notebooksbilliger.de
In review: Asus ZenBook Flip UX360UAK BB351T. Test model courtesy of Notebooksbilliger.de

The Skylake model of the ZenBook that we had previously tested presented weak hinges. They could not hold the lid at certain angles and it closed. We cannot say whether this was a unique case or whether it was a general issue. However, we can say that the hinges of our present review sample are pulled tighter and allow for all intended modes of use.

A success the second time around: Asus delivers a largely decent convertible with its ZenBook UX360UAK. However, the device's whistling fan is inappropriate.

The installed Core i5 processor from the Kaby Lake generation has more than enough computing power for all common application scenarios. The laptop does not heat up excessively and usually runs quietly, at least while idling. The fan proves to be one of the ZenBook's weaknesses as soon as it speeds up. It produces a quiet whistling sound that should not occur. A fast SSD ensures a smooth running system. Users who want to replace the SSD with a higher-capacity model will have to remove the base unit's tray. A maintenance hatch is not present.

The battery life is outstanding. The ZenBook outruns the Skylake model in this regard. The keyboard is also good. The IPS panel pleases with high brightness, high contrast, stable viewing angles and its color reproduction in the state of delivery is more than decent. Our review sample came with an anti-glare screen protector that leads to a clear improvement compared with glossy screens. It is surprising that Asus does not advertise this.

Asus Zenbook Flip UX360UAK-BB351T - 02/21/2017 v6
Sascha Mölck

Chassis
86 / 98 → 88%
Keyboard
82%
Pointing Device
86%
Connectivity
49 / 80 → 62%
Weight
71 / 35-78 → 85%
Battery
94%
Display
85%
Games Performance
57 / 68 → 84%
Application Performance
86 / 87 → 99%
Temperature
93%
Noise
88%
Audio
65 / 91 → 71%
Camera
61 / 85 → 71%
Average
77%
86%
Convertible - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Asus ZenBook Flip UX360UAK-BB351T Convertible Review
Sascha Mölck, 2017-02-23 (Update: 2018-05-15)